For example some species of baleen whale such as the humpback whale are very solitary and spend much of their lives alone which makes them much less social than other groups of Cetacea such as the killer whale (the largest of the dolphin species) which often travels in groups or pods of up to 30 or more.
a combining form meaning âhealer,â âmedicine,â âhealing,â used in the formation of compound words: iatrogenic. Origin of iatro-. < Greek, combining form of iÄtrÃ³s healer, equivalent to iÃ¢(sthai) to heal + -tros noun suffix. Word Origin and History for iatro-.
1 For example, hypocalcemia is low calcium in the blood and hyposensitivity is undersensitivity. 2  The opposite of hypo-is hyper-. 3  iatr-: Prefix relating to a physician or medicine. 4  From the Greek word iatros meaning physician (healer). 5  As in iatrogenic, generated by physicians, due to the activity of doctors.